3 ResultsMost relevantConsidering purchasing a 2003 Monaco Diplomat 40 PWD...My question has to do more with known issues in that model and year coach. Slide issues, trailing arm issues, engine issues, electrical, etc. It has a Cummins 8.9 litre 330 HP diesel engine with t...View results from repliesUsed Class A's...iles, 10 years old or newer, you find a bunch of units priced in the mid 30's. I am sure I can buy a lot of problems but what should I look for (and what should I avoid)? I should mention that I...View results from repliesPW Excel Buying Process...any problems dealing with McMahon RV apparently placed it. McMahon RV was selling both Roadtrek and Pleasure Way van conversions at the time; these Class B RVs were a marvel to us and it was fun l...